NETCHEM Validacija metode odreivanja cinka u otpadnoj vodi

NETCHEM Validacija metode određivanja cinka u otpadnoj vodi pomoću AAS Deo 3 – Preciznost Autor: Dr Ivana Mihajlović, docent Institucija: Univerzitet u Novom Sadu, Fakultet tehničkih nauka, Departman za inženjerstvo zaštite životne sredine i zaštite na radu, Trg Dositeja Obradovic a 6, 21000 Novi Sad Kurs: Metodologija instrumentalne analize vode i vazduha ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Podloga • Edukacioni ciljevi 1. Razvoj veština kako da se statistički obrade podaci za proveru linearnosti kalibracione krive analitičke metode 2. Učenje kako da se statistički obrade podaci za proveru tačnosti i preciznosti analitičke metode 3. Savladavanje veština kako da se izračuna granica detekcije (LOD) i granica kvantifikacije (LOQ) metode ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Uslov za slušanje lekcije • Studenti treba da: • poseduju znanje o osnovama AAS tehnike, • poseduju iskustvo u korišćenju excel programa, • pogledaju edukacioni materijal koji se (http: //mdl. netchem. ac. rs/course/view. php? id=24 ) nalazi na Moodle

Napraviti excel sa tabom (sheet) – Preciznost - sa tabelom koja sadrži podatke za statistički proračun ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Uneti izmerene vrednosti koncentracija standardnih rastvora Zn, CRM=0. 28 mg/L ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati razliku izmerenih vrednosti dva analitičara R=abs (B 13 -C 13) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati Rsr = average(D 13: D 22) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati Xsr = AVERAGE (B 13: C 22) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati unutarserijsku preciznost (ponovljivost) - Sw Sw = F 13/F 16 ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati standardnu devijaciju Sx=STDEV (B 13: C 22) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati međuserijsku preciznost - Sb Sb= SQRT(F 18*F 18 -F 17*F 17/2) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati ukupnu standardnu devijaciju ST ST = SQRT(F 17*F 17+F 19*F 19) ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Izračunati preciznost i uporediti rezultat sa zahtevom za preciznost Odstupanje <10% ___________________________________________________ This project has been funded with support from the European Commission. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.